New ternary magnets (Ca, Sr, Ba)14MnBi11

Webb, David J.; Kuromoto, Traci Y.; Kauzlarich, Susan M.

doi:10.1016/0304-8853(91)90429-e

Cited by 20 publications

(24 citation statements)

References 2 publications

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“…For the Ba member, the shortest Bi5–Bi6 contact of 3.34 Å appears to be longer than the typical single Bi–Bi bonds (single‐bonded Pauling radius r Bi = 1.52 Å). However, this value is close to the bond lengths in hypervalent polyatomic Bi species . In contrast to Bi6, the occupancy of the Bi7 site decreases with decreasing unit cell size, and no occupation of this position was found for the Eu‐substituted representatives.…”

Section: Resultssupporting

confidence: 68%

Synthesis, Crystal and Electronic Structure of the Titanium Bismuthides Sr₅Ti₁₂Bi_19+x, Ba₅Ti₁₂Bi_19+x, and Sr_5–_δEu_δTi₁₂Bi_19+x (x ≈ 0.5–1.0; δ ≈ 2.4, 4.0)

Ovchinnikov

Bobev

2018

Eur J Inorg Chem

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Crystals of the new ternary bismuthides AE 5 Ti 12 Bi 19+x (AE = Sr, Ba) and Sr 5-δ Eu δ Ti 12 Bi 19+x (δ ≈ 2.4, 4.0; x ≤ 1.0) were grown using an excess of molten Bi as a flux. The title compounds crystallize in the cubic non-centrosymmetric space group P43m and are structurally related to the antimonides Ba 5 M 12 Sb 19+x (M = Ti, V, Nb). The crystal structure features Ti atoms stuffed in the γ-brass-like sub-lattice made of AE (AE = Sr, Ba, Eu) and Bi atoms. The arrangement of the AE atoms, on its own, represents a framework consisting of interconnected regular tetrahedra and octahedra. Another notable attribute of [a]

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Section: Resultssupporting

confidence: 68%

Synthesis, Crystal and Electronic Structure of the Titanium Bismuthides Sr₅Ti₁₂Bi_19+x, Ba₅Ti₁₂Bi_19+x, and Sr_5–_δEu_δTi₁₂Bi_19+x (x ≈ 0.5–1.0; δ ≈ 2.4, 4.0)

Ovchinnikov

Bobev

2018

Eur J Inorg Chem

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“…The corresponding distance ranges from 3.38 Å to 3.46 Å upon going from Sr 3 Ti 8 Bi 10 to Ba 3 Ti 8 Bi 10 , respectively, which is far above the contacts between single-bonded Bi atoms (the Pauling radius is r Bi = 1.52 Å). Nevertheless, similarly long Bi–Bi bonds are found in hypervalent anionic species, e.g., in the linear [Bi 3 ] 7– moieties in AE 14 MgBi 11 and AE 14 MnBi 11 ( AE = Ca, Sr, Ba, Eu, Yb) − and Ba 2 Mn 1– x Bi 2 . In pnictides, hypervalent interactions are realized as a result of chemical bonding optimization in electron-rich polyanionic subunits, such as oligomers − , chains, ,,− or planes. ,− After the Bi2–Bi2 contacts, the shortest distance between the Bi atoms in AE 3 Ti 8 Bi 10 is the Bi1–Bi1 pair between the corners of the adjacent Ti1Bi 6 octahedra along the c -direction.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, and Crystal and Electronic Structures, of the Titanium-Rich Bismuthides AE₃Ti₈Bi₁₀ (AE = Sr, Ba, Eu)

Ovchinnikov

Bobev

2018

Inorg. Chem.

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Three isotypic compounds with the chemical formula AETiBi ( AE = Sr, Ba, Eu) have been obtained via both high-temperature solid state and flux growth reactions. Their crystal structure, representing a new type (space group P6/ mmc, Pearson symbol hP42), features an open framework composed of interlinked TiBi square pyramids and TiBi octahedra. The Ti-Bi substructure is penetrated by infinite columns of face-sharing AE polyhedra centered by Bi atoms. First-principle calculations and physical property measurements indicate metallic behavior and absence of localized magnetic moments on the Ti atoms. Analysis of the chemical bonding reveals strong Ti-Bi and Ti-Ti bonds. The latter demonstrate classic two-center, as well as multicenter, interactions.

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“…As shown in Fig. 4(a), after fitting with the nuclear structure based on the X-ray results, extra intensities were found to be superposed on the (2,0,0), (1,1,2), (2,0,0), (0,0,4), (1,3,2), and (2,0,4) reflections. To investigate the nature of these intensities, we performed higher statistical neutron powder diffraction experiments on the same powder sample below and above the magnetic transition temperature on the BT-2 spectrometer.…”

Section: Magnetic Susceptibility and Transport Measurementsmentioning

confidence: 97%

Neutron Diffraction Study of the Ternary Transition Metal Zintl Compound Ca14MnSb11

Kim

2002

Journal of Solid State Chemistry

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New ternary magnets (Ca, Sr, Ba)14MnBi11

Cited by 20 publications

References 2 publications

Synthesis, Crystal and Electronic Structure of the Titanium Bismuthides Sr₅Ti₁₂Bi_19+x, Ba₅Ti₁₂Bi_19+x, and Sr_5–_δEu_δTi₁₂Bi_19+x (x ≈ 0.5–1.0; δ ≈ 2.4, 4.0)

Synthesis, Crystal and Electronic Structure of the Titanium Bismuthides Sr₅Ti₁₂Bi_19+x, Ba₅Ti₁₂Bi_19+x, and Sr_5–_δEu_δTi₁₂Bi_19+x (x ≈ 0.5–1.0; δ ≈ 2.4, 4.0)

Synthesis, and Crystal and Electronic Structures, of the Titanium-Rich Bismuthides AE₃Ti₈Bi₁₀ (AE = Sr, Ba, Eu)

Neutron Diffraction Study of the Ternary Transition Metal Zintl Compound Ca14MnSb11

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New ternary magnets (Ca, Sr, Ba)14MnBi11

Cited by 20 publications

References 2 publications

Synthesis, Crystal and Electronic Structure of the Titanium Bismuthides Sr5Ti12Bi19+x, Ba5Ti12Bi19+x, and Sr5–δEuδTi12Bi19+x (x ≈ 0.5–1.0; δ ≈ 2.4, 4.0)

Synthesis, Crystal and Electronic Structure of the Titanium Bismuthides Sr5Ti12Bi19+x, Ba5Ti12Bi19+x, and Sr5–δEuδTi12Bi19+x (x ≈ 0.5–1.0; δ ≈ 2.4, 4.0)

Synthesis, and Crystal and Electronic Structures, of the Titanium-Rich Bismuthides AE3Ti8Bi10 (AE = Sr, Ba, Eu)

Neutron Diffraction Study of the Ternary Transition Metal Zintl Compound Ca14MnSb11

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Synthesis, Crystal and Electronic Structure of the Titanium Bismuthides Sr₅Ti₁₂Bi_19+x, Ba₅Ti₁₂Bi_19+x, and Sr_5–_δEu_δTi₁₂Bi_19+x (x ≈ 0.5–1.0; δ ≈ 2.4, 4.0)

Synthesis, Crystal and Electronic Structure of the Titanium Bismuthides Sr₅Ti₁₂Bi_19+x, Ba₅Ti₁₂Bi_19+x, and Sr_5–_δEu_δTi₁₂Bi_19+x (x ≈ 0.5–1.0; δ ≈ 2.4, 4.0)

Synthesis, and Crystal and Electronic Structures, of the Titanium-Rich Bismuthides AE₃Ti₈Bi₁₀ (AE = Sr, Ba, Eu)